/* ==========================================================================
   Components — Chat UI, file viewer, cards, status, code blocks
   ========================================================================== */

/* ---------- Chat UI (main experience) ---------- */
.chat-container {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}

/* --- Phase indicator (subtle, at top of chat) --- */
.chat-phase {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-s);
  padding: var(--spacing-s) var(--spacing-l);
  background: var(--color-neutral-background-1);
  border-bottom: 1px solid var(--color-neutral-stroke-2);
  font-size: var(--font-size-200);
  color: var(--color-neutral-foreground-3);
  flex-shrink: 0;
}

.chat-phase-step {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.chat-phase-dot {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-circular);
  background: var(--color-neutral-stroke-1);
  transition: background var(--duration-normal);
}

.chat-phase-dot.active {
  background: var(--color-brand-primary);
  box-shadow: 0 0 0 2px var(--color-brand-light);
}

.chat-phase-dot.completed {
  background: var(--color-success);
}

.chat-phase-connector {
  width: 16px;
  height: 1px;
  background: var(--color-neutral-stroke-2);
}

.chat-phase-connector.completed {
  background: var(--color-success);
}

/* --- Messages area (centered, ChatGPT-style) --- */
.chat-messages {
  flex: 1;
  overflow-y: auto;
  scroll-behavior: smooth;
}

.chat-messages-inner {
  max-width: var(--chat-max-width);
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-l);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

/* --- Chat bubble --- */
.chat-bubble {
  padding: var(--spacing-m) 0;
  font-size: var(--font-size-300);
  line-height: 1.6;
  word-wrap: break-word;
  animation: bubbleIn var(--duration-normal) var(--easing-ease-out);
}

@keyframes bubbleIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.chat-bubble.user {
  padding: var(--spacing-m) var(--spacing-l);
  background: var(--color-brand-primary);
  color: var(--color-neutral-foreground-on-brand);
  border-radius: var(--radius-large);
  border-bottom-right-radius: var(--radius-small);
  align-self: flex-end;
  max-width: 80%;
}

.chat-bubble.assistant {
  color: var(--color-neutral-foreground-1);
}

.chat-bubble.assistant a {
  color: var(--color-brand-primary);
}

/* --- Markdown content inside assistant bubbles --- */
.chat-bubble.assistant p {
  margin-bottom: var(--spacing-m);
}

.chat-bubble.assistant p:last-child {
  margin-bottom: 0;
}

.chat-bubble.assistant ul {
  margin: var(--spacing-s) 0;
  padding-left: var(--spacing-xl);
}

.chat-bubble.assistant ul li {
  margin-bottom: var(--spacing-xs);
}

.chat-bubble.assistant pre {
  background: var(--color-neutral-background-inverted);
  color: #d4d4d4;
  border-radius: var(--radius-medium);
  padding: var(--spacing-m);
  overflow-x: auto;
  font-family: var(--font-family-mono);
  font-size: var(--font-size-200);
  line-height: 1.5;
  margin: var(--spacing-m) 0;
}

.chat-bubble.assistant code {
  font-family: var(--font-family-mono);
  font-size: 0.9em;
  background: var(--color-neutral-background-3);
  padding: 1px 4px;
  border-radius: var(--radius-small);
}

.chat-bubble.assistant pre code {
  background: transparent;
  padding: 0;
  border-radius: 0;
}

/* A2UI components inside assistant bubbles get some breathing room */
.chat-bubble.assistant .a2ui-component {
  margin: var(--spacing-m) 0;
}

.chat-bubble.assistant .a2ui-component:last-child {
  margin-bottom: 0;
}

/* --- Typing indicator --- */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: var(--spacing-m) 0;
  width: fit-content;
}

.typing-dot {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-circular);
  background: var(--color-neutral-foreground-3);
  animation: typingBounce 1.4s infinite ease-in-out;
}

.typing-dot:nth-child(2) { animation-delay: 0.16s; }
.typing-dot:nth-child(3) { animation-delay: 0.32s; }

@keyframes typingBounce {
  0%, 80%, 100% { transform: translateY(0); }
  40% { transform: translateY(-6px); }
}

/* --- Input area (centered, bottom of chat) --- */
.chat-input-area {
  flex-shrink: 0;
  background: var(--color-neutral-background-2);
  border-top: 1px solid var(--color-neutral-stroke-2);
  padding: var(--spacing-m) var(--spacing-l) var(--spacing-l);
}

.chat-input-inner {
  max-width: var(--chat-max-width);
  margin: 0 auto;
  display: flex;
  align-items: flex-end;
  gap: var(--spacing-s);
  background: var(--color-neutral-background-1);
  border: 1px solid var(--color-neutral-stroke-1);
  border-radius: var(--radius-large);
  padding: var(--spacing-s) var(--spacing-m);
  transition: border-color var(--duration-fast), box-shadow var(--duration-fast);
}

.chat-input-inner:focus-within {
  border-color: var(--color-brand-primary);
  box-shadow: 0 0 0 1px var(--color-brand-primary);
}

.chat-textarea {
  flex: 1;
  min-height: 24px;
  max-height: 160px;
  padding: var(--spacing-xs) 0;
  border: none;
  font-family: var(--font-family-base);
  font-size: var(--font-size-300);
  line-height: 1.5;
  resize: none;
  outline: none;
  background: transparent;
  color: var(--color-neutral-foreground-1);
}

.chat-textarea::placeholder {
  color: var(--color-neutral-foreground-disabled);
}

.chat-send-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--color-neutral-foreground-3);
  cursor: pointer;
  flex-shrink: 0;
  transition: background var(--duration-fast);
}

.chat-send-btn:hover {
  background: var(--color-neutral-background-3);
}

.chat-send-btn:disabled {
  background: transparent;
  color: var(--color-neutral-foreground-disabled);
  cursor: not-allowed;
}

/* --- Demo badge (in phase bar) --- */
.demo-badge {
  display: inline-flex;
  align-items: center;
  padding: 1px 8px;
  font-size: 10px;
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-warning);
  background: var(--color-warning-background);
  border-radius: var(--radius-medium);
  margin-left: var(--spacing-s);
}

/* --- Prompt inspector details block --- */
.prompt-inspector {
  margin-top: var(--spacing-s);
  font-size: var(--font-size-200);
}

.prompt-inspector summary {
  cursor: pointer;
  color: var(--color-neutral-foreground-2);
  font-size: var(--font-size-200);
  padding: var(--spacing-xs) 0;
  user-select: none;
}

.prompt-inspector summary:hover {
  color: var(--color-brand-primary);
}

.prompt-inspector .code-block {
  margin-top: var(--spacing-s);
  max-height: 300px;
  overflow-y: auto;
}

.prompt-inspector .code-block pre {
  font-size: var(--font-size-100, 11px);
  white-space: pre-wrap;
  word-break: break-word;
}

/* ---------- Error Bubble ---------- */
.chat-bubble.error-bubble {
  background: var(--color-error-background);
  border: 1px solid var(--color-error);
  padding: var(--spacing-m) var(--spacing-l);
  border-radius: var(--radius-large);
  color: var(--color-neutral-foreground-1);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-s);
}

.error-bubble-text {
  font-size: var(--font-size-200);
}

.error-retry-btn {
  align-self: flex-start;
  padding: var(--spacing-xs) var(--spacing-m);
  font-size: var(--font-size-200);
  font-weight: var(--font-weight-semibold);
  color: var(--color-error);
  background: transparent;
  border: 1px solid var(--color-error);
  border-radius: var(--radius-medium);
  cursor: pointer;
  transition: background var(--duration-fast);
}

.error-retry-btn:hover {
  background: var(--color-error);
  color: white;
}

/* ---------- Streaming Bubble ---------- */
.chat-bubble.streaming {
  opacity: 0.85;
  border-left: 2px solid var(--color-brand-primary);
  padding-left: var(--spacing-m);
}

/* ---------- File Viewer ---------- */
.file-viewer-container {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.file-viewer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-s) var(--spacing-m);
  border-bottom: 1px solid var(--color-neutral-stroke-2);
  flex-shrink: 0;
}

.file-viewer-title {
  font-size: var(--font-size-300);
  font-weight: var(--font-weight-semibold);
}

.file-viewer-close {
  width: 28px;
  height: 28px;
  border: none;
  border-radius: var(--radius-medium);
  background: transparent;
  color: var(--color-neutral-foreground-2);
  cursor: pointer;
  font-size: var(--font-size-400);
  display: flex;
  align-items: center;
  justify-content: center;
}

.file-viewer-close:hover {
  background: var(--color-neutral-background-3);
}

.file-viewer-tabs {
  display: flex;
  overflow-x: auto;
  border-bottom: 1px solid var(--color-neutral-stroke-2);
  background: var(--color-neutral-background-1);
  flex-shrink: 0;
}

.file-tab {
  padding: var(--spacing-s) var(--spacing-l);
  border: none;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: var(--color-neutral-foreground-2);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-200);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--duration-fast);
}

.file-tab:hover {
  color: var(--color-neutral-foreground-1);
  background: var(--color-neutral-background-3);
}

.file-tab.active {
  color: var(--color-brand-primary);
  border-bottom-color: var(--color-brand-primary);
  font-weight: var(--font-weight-semibold);
}

.file-viewer-content {
  flex: 1;
  overflow: auto;
  background: var(--color-neutral-background-inverted);
}

.file-viewer-code {
  margin: 0;
  padding: var(--spacing-m);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-200);
  line-height: 1.6;
  color: #d4d4d4;
  white-space: pre;
  tab-size: 2;
}

.file-viewer-actions {
  display: flex;
  gap: var(--spacing-s);
  padding: var(--spacing-s) var(--spacing-m);
  border-top: 1px solid var(--color-neutral-stroke-2);
  background: var(--color-neutral-background-1);
  flex-shrink: 0;
}

.file-viewer-copy-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-m);
  border: 1px solid var(--color-neutral-stroke-1);
  border-radius: var(--radius-medium);
  background: transparent;
  color: var(--color-neutral-foreground-2);
  font-size: var(--font-size-200);
  font-family: var(--font-family-base);
  cursor: pointer;
}

.file-viewer-copy-btn:hover {
  background: var(--color-neutral-background-3);
}

/* ---------- Cards ---------- */
.card {
  background: var(--color-neutral-background-1);
  border: 1px solid var(--color-neutral-stroke-2);
  border-radius: var(--radius-large);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-2);
  transition: box-shadow var(--duration-fast);
}

.card:hover {
  box-shadow: var(--shadow-4);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-l);
}

.card-title {
  font-size: var(--font-size-500);
  font-weight: var(--font-weight-semibold);
  color: var(--color-neutral-foreground-1);
}

.card-subtitle {
  font-size: var(--font-size-200);
  color: var(--color-neutral-foreground-3);
  margin-top: var(--spacing-xs);
}

.card-body {
  color: var(--color-neutral-foreground-2);
}

.card-footer {
  display: flex;
  gap: var(--spacing-s);
  margin-top: var(--spacing-l);
  padding-top: var(--spacing-l);
  border-top: 1px solid var(--color-neutral-stroke-2);
}

/* ---------- Status badge ---------- */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 2px var(--spacing-s);
  border-radius: var(--radius-circular);
  font-size: var(--font-size-100);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.status-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-circular);
}

.status-badge.success {
  background: var(--color-success-background);
  color: var(--color-success);
}

.status-badge.success .status-badge-dot {
  background: var(--color-success);
}

.status-badge.warning {
  background: var(--color-warning-background);
  color: #8a6d00;
}

.status-badge.warning .status-badge-dot {
  background: var(--color-warning);
}

.status-badge.error {
  background: var(--color-error-background);
  color: var(--color-error);
}

.status-badge.error .status-badge-dot {
  background: var(--color-error);
}

.status-badge.info {
  background: var(--color-info-background);
  color: var(--color-info);
}

.status-badge.info .status-badge-dot {
  background: var(--color-info);
}

/* ---------- Code block ---------- */
.code-block {
  position: relative;
  background: var(--color-neutral-background-inverted);
  color: #d4d4d4;
  border-radius: var(--radius-medium);
  overflow: hidden;
  font-family: var(--font-family-mono);
  font-size: var(--font-size-200);
  line-height: 1.5;
}

.code-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-s) var(--spacing-m);
  background: rgba(255, 255, 255, 0.05);
  font-size: var(--font-size-100);
  color: rgba(255, 255, 255, 0.6);
}

.code-block-copy {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 2px var(--spacing-s);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-small);
  background: transparent;
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-100);
  font-family: var(--font-family-base);
  cursor: pointer;
}

.code-block-copy:hover {
  background: rgba(255, 255, 255, 0.1);
}

.code-block pre {
  margin: 0;
  padding: var(--spacing-m);
  overflow-x: auto;
}

.code-block code {
  font-family: inherit;
}

/* ---------- Loading / skeleton --- */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-neutral-stroke-2);
  border-top-color: var(--color-brand-primary);
  border-radius: var(--radius-circular);
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.spinner.large {
  width: 40px;
  height: 40px;
  border-width: 3px;
}

.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-neutral-background-3) 25%,
    var(--color-neutral-background-4) 50%,
    var(--color-neutral-background-3) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-medium);
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-text {
  height: 14px;
  margin-bottom: var(--spacing-s);
}

.skeleton-heading {
  height: 20px;
  width: 60%;
  margin-bottom: var(--spacing-m);
}

.skeleton-block {
  height: 80px;
}

/* ---------- Buttons (generic) --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-s);
  padding: var(--spacing-s) var(--spacing-l);
  border-radius: var(--radius-medium);
  border: 1px solid var(--color-neutral-stroke-1);
  background: var(--color-neutral-background-1);
  color: var(--color-neutral-foreground-1);
  font-family: var(--font-family-base);
  font-size: var(--font-size-300);
  cursor: pointer;
  transition: all var(--duration-fast);
  text-decoration: none;
}

.btn:hover {
  background: var(--color-neutral-background-3);
}

.btn.primary {
  background: var(--color-brand-primary);
  color: var(--color-neutral-foreground-on-brand);
  border-color: var(--color-brand-primary);
}

.btn.primary:hover {
  background: var(--color-brand-primary-hover);
}

.btn.large {
  padding: var(--spacing-m) var(--spacing-xxl);
  font-size: var(--font-size-400);
}

/* ---------- Form elements --- */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-l);
}

.form-label {
  font-size: var(--font-size-300);
  font-weight: var(--font-weight-semibold);
  color: var(--color-neutral-foreground-1);
}

.form-label .required {
  color: var(--color-error);
  margin-left: 2px;
}

.form-input {
  padding: var(--spacing-s) var(--spacing-m);
  border: 1px solid var(--color-neutral-stroke-1);
  border-radius: var(--radius-medium);
  font-family: var(--font-family-base);
  font-size: var(--font-size-300);
  color: var(--color-neutral-foreground-1);
  background: var(--color-neutral-background-1);
  outline: none;
  transition: border-color var(--duration-fast);
}

.form-input:focus {
  border-color: var(--color-brand-primary);
  box-shadow: 0 0 0 1px var(--color-brand-primary);
}

.form-hint {
  font-size: var(--font-size-200);
  color: var(--color-neutral-foreground-3);
}

.form-error {
  font-size: var(--font-size-200);
  color: var(--color-error);
}

/* ---------- Tabs ---------- */
.tabs {
  display: flex;
  border-bottom: 1px solid var(--color-neutral-stroke-2);
}

.tab-item {
  padding: var(--spacing-s) var(--spacing-l);
  border: none;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: var(--color-neutral-foreground-2);
  font-family: var(--font-family-base);
  font-size: var(--font-size-300);
  cursor: pointer;
  transition: all var(--duration-fast);
}

.tab-item:hover {
  color: var(--color-neutral-foreground-1);
  background: var(--color-neutral-background-3);
}

.tab-item.active {
  color: var(--color-brand-primary);
  border-bottom-color: var(--color-brand-primary);
  font-weight: var(--font-weight-semibold);
}

.tab-content {
  padding: var(--spacing-l) 0;
}

/* ---------- Sparkle/Pulse Loading Animation ---------- */
.sparkle-loader {
  display: flex;
  align-items: center;
  gap: var(--spacing-m);
  padding: var(--spacing-m) 0;
  animation: sparkleIn var(--duration-normal) var(--easing-ease-out);
}

.sparkle-dots {
  display: flex;
  align-items: center;
  gap: 4px;
}

.sparkle-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-circular);
  background: linear-gradient(135deg, var(--color-copilot-gradient-start), var(--color-copilot-gradient-end));
  animation: sparklePulse 1.4s infinite ease-in-out;
}

.sparkle-dot:nth-child(2) { animation-delay: 0.2s; }
.sparkle-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes sparklePulse {
  0%, 100% {
    transform: scale(0.6);
    opacity: 0.4;
  }
  50% {
    transform: scale(1.2);
    opacity: 1;
  }
}

@keyframes sparkleIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.sparkle-text {
  font-size: var(--font-size-200);
  color: var(--color-neutral-foreground-3);
  font-style: italic;
}

/* ---------- File Generation Chips ---------- */
.file-chips-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-s);
  margin: var(--spacing-s) 0;
}

.file-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-m);
  border: 1px solid var(--color-neutral-stroke-2);
  border-radius: var(--radius-circular);
  background: var(--color-neutral-background-1);
  color: var(--color-neutral-foreground-2);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-200);
  cursor: pointer;
  transition: all var(--duration-fast);
  white-space: nowrap;
}

.file-chip:hover {
  background: var(--color-brand-lighter);
  border-color: var(--color-brand-primary);
  color: var(--color-brand-primary);
}

.file-chip-icon {
  display: inline-flex;
  align-items: center;
}

.file-chip-name {
  font-weight: var(--font-weight-semibold);
}

.file-chip-status {
  display: inline-flex;
  align-items: center;
}

.file-chip-spinner {
  width: 12px;
  height: 12px;
  border: 2px solid var(--color-neutral-stroke-2);
  border-top-color: var(--color-brand-primary);
  border-radius: var(--radius-circular);
  animation: spin 0.8s linear infinite;
}

.file-chip-pending {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-circular);
  background: var(--color-neutral-foreground-disabled);
}

/* ---------- Preview Panel ---------- */
.preview-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-m) var(--spacing-l);
  background: var(--color-neutral-background-1);
  border-bottom: 1px solid var(--color-neutral-stroke-2);
  flex-shrink: 0;
}

.preview-panel-title {
  font-size: var(--font-size-300);
  font-weight: var(--font-weight-semibold);
  color: var(--color-neutral-foreground-1);
}

.preview-panel-close {
  width: 28px;
  height: 28px;
  border: none;
  border-radius: var(--radius-medium);
  background: transparent;
  color: var(--color-neutral-foreground-2);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--duration-fast);
}

.preview-panel-close:hover {
  background: var(--color-neutral-background-3);
}

.preview-panel-body {
  padding: var(--spacing-m);
  overflow-y: auto;
  flex-shrink: 0;
  border-bottom: 1px solid var(--color-neutral-stroke-2);
}

.preview-panel-body.hidden {
  display: none;
  border-bottom: none;
}

/* Hide file-viewer's own header — preview panel header replaces it */
#file-viewer .file-viewer-header {
  display: none;
}

/* ---------- Dialog overlay --- */
.dialog-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeIn var(--duration-fast) var(--easing-ease);
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.dialog {
  background: var(--color-neutral-background-1);
  border-radius: var(--radius-xlarge);
  box-shadow: var(--shadow-28);
  min-width: 400px;
  max-width: 600px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  animation: dialogSlideIn var(--duration-normal) var(--easing-ease-out);
}

@keyframes dialogSlideIn {
  from {
    opacity: 0;
    transform: translateY(-16px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.dialog-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-l) var(--spacing-xl);
  border-bottom: 1px solid var(--color-neutral-stroke-2);
}

.dialog-title {
  font-size: var(--font-size-500);
  font-weight: var(--font-weight-semibold);
}

.dialog-body {
  padding: var(--spacing-xl);
  overflow-y: auto;
  flex: 1;
}

.dialog-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-s);
  padding: var(--spacing-l) var(--spacing-xl);
  border-top: 1px solid var(--color-neutral-stroke-2);
}